US Patent Braces - Page 4
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| Zirikelback, Joseph Location : buffalo, NY Patent # 438338 Type : Ratchet bit brace Date : Oct 14, 1890 Rarity : NS Manufactured by L.M. & K. Wks, Lancaster, NY |
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| Colvin, F.J . Location : Hamden, CT Patent # 518938 Type : Bit stock; chuck with spring mechanism Date: May 1, 1894 Rarity: B |
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| Gavin, George & Cromer, Lawrence Location: Eureka, NY Patent # 366826 Type: Bit brace Date: July 19, 1887 Rarity: A |
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